Appeal No. 1999-2274
Application No. 08/811,787
Representative independent claim 1 is reproduced as follows:
1. In an imaging system, an energy discriminating radiation detector
comprising:
(a) a first element comprising a first material of a kind which is
preferentially responsive to penetrative radiation of a first energy
range;
(b) a second element comprising a second material different in kind
from said first material and of a kind which is preferentially responsive
to penetrative radiation of a second energy range extending higher
than said first energy range and which is positioned to receive
radiation which has penetrated through a portion of said first element;
(c) a filter of penetrative radiation interposed between said first and
second elements; and
(d) means coupled to said elements for producing an image of a
portion of an object from radiation emerging from the object and
incident on the first and second elements.
The examiner relies on the following references:
Alvarez et al. [Alvarez] 4,029,963 Jun. 14, 1977
Allport 4,037,104 Jul. 19, 1977
Brooks 4,247,774 Jan. 27, 1981
Claims 1-5, 10-16 and 20-42 stand rejected under 35 U.S.C. 103 as unpatentable
over either one of Alvarez or Brooks, in view of Allport.
2
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